Improvement in inks



UNITED STATES;

PATENT OFFICE.

' I JOHN F. LOASE, or GRAND RAPIDS, MICHIGAN.

lMPROVEMENT IN INKS.

Specification forming part of Letters Patent No. 150,4?5, dated May 5,1874; application filed a i February 5, 1874.

To all whom it may concern I Be it known that I, JOHN F. LoAsE, of GrandRapids, Kent county, State of Michigan, have LOASE, having a necessaryand dependent connection with the saidimprovements, all intended to aidelect-rotyping, stereotyping, and

kindred arts, of which the following is a specification:

These inventions relate to that class of compounds, and also to an art,each depending on the other, which, to a considerable extent, lessen thelabor and expense of electrotyping, stereotyping, and kindred arts.

To prepare said compounds, take-- (A.) Sulphuric acid, (commercial) (B.)Refined white coffee-sugar.

(0.) Pure soft water at ordinary temperature.

(It' should be observed that the proportions of all the fluids areascertained by fluid measure, and not by weight.)

(130.) Dissolve one ounce (avoirdupois weight) of sugar (B) intwenty-three drains of water, (0.)

(ABO) Mix sulphuric acid (A) with the sugar-and-water solution,designated by B0, in the proportion of two of the acid to one of saidsolution. This makes a very black compound, which attains a high degreeof temperature while mixing. Let it become cold.

(1.) Mix some of the lastnamed compound, designated by ABC, with anequal quantity of water, (0.)

(2.) Mix some of the compound designated -byABO with twice the quantityof water, (0.)

(3.) Mix some of the compound designated by A530 with three times thequantity of water A 1) Mix some of the compound designated by ABO withfour times the quantity of wa ter, (0.)

(5.) Mix some of the compound designated by ABO with five times thequantity of wa- (6.) Mix some of the compound designated by ABC with sixtimes the quantity of water, (0.)

To use said compounds designated by the figures 1, 2, 3, 4, 5, and 6,respectively, apply them, like ordinary ink, upon one side only ofbristol-board or other card-board of similar quality and nature, with apen or other implement, according to the work desired. Put on as much ofthe fluid as the mark made will hold conveniently. Suffer the fluid todry undisturbed. The compound designated by 6 makes a mark slightlyelevated above the surface. The compounds designated by 5, 4, 3, 2, and1, respectively, make marks raised higher and higher in the orderindicated, the compound designated by 1 making the highest elevation.

The said marks are raised by any one of said compounds in proportion tothe width of the mark made. Therefore, in'writing a page ofdiiferentsized letters, or drawing a map, out, or other work, two ormore of the different grades of fluids designated by said numbers may beused to secure uniformity of height in all the work wherever that isdesired.

The said art consists in the use of said fluids, as aforesaid, combinedwith the following methods of making molds and casts of and from thework done with said fluids, which molds and casts should be made as soonafter as practicable, within about thirty days, owing to thecorrosiveness of the fluids aforesaid.

The bristol-board or other cardboard having the writing, cut, drawing,lines, or marks made with said fluids upon them, should first have alight coat of thin shellac varnish brushed evenly over the back. Nextoila perfectly smooth and level surface prepared for the purpose, andalso oil the back of the card over the dried varnish. Stick the carddown onto the smooth, level surface by means of the oil. Next oil theface of the card evenly. Fasten over the card a thin chase, large enoughto leave a suitable margin between the work and the inner edges of thechase. Then pour pure melted wax, not too hot, over the oiled writtensurface. Take off the surplus wax carefully above the level of the chasewith a straight float. When the wax has become hard, take ofi the chase,mold, and card. Separate the cardfrom the wax mold. The wax mold will befound to have a perfect impression of the cut, drawing, or writing, asoriginally upon the card. The wax mold so produced may then be preparedand used in electrotyping in the usual manner.

Plaster casts maybe taken from such wax molds in the usual way, firstoiling the wax mold evenly. Plaster casts may be taken directly fromsuch cards by first brushing a light coat of thin shellac varnish overboth sides of the card quickly, and then proceeding as above Yprovements upon the invention of said D. 0.

stated in taking a wax mold, except using fine plaster-of-paris mixed tothe consistency of cream instead of wax. Harden the plaster cast and useit as is commonly practiced.

Other substances which answer the same purpose may be used instead ofwax or plaster.

Where the work done is large, the bristolboard or other card used may becut into sections, and the copper shells produced in electrotyping fromthe wax molds may be trimmed and united at or about the time of backingthem with type-metal. Similarly in stereotyping and other cases.

Substantially the foilowin g method of male ing molds maybe used:Varnish the back of the card or section thereof, as aforesaid; then glueor paste the card carefully onto a piece of wood or othersuitablcsubstance of the right size and thickness, made perfectly smooth andlevel, or such other form as may be desired. Pour pure melted wax, orsome other substance answering the same purpose, over the surface of thecard without using oil; then heat the wax on the surface, distributing athin coat of it over the whole surface of the card and the work executedthereon. Then use the mold so made as above specified.

I claim as my invention the following im- McNeil, viz:

'1. The combination of sugar and water in about the proportionsaforesaid, then mixing said sugauandwater solution with sulphuric acidin about the proportions aforesaid, and when cooled mixing saidlast-mentioned compound with water in different proportions,substantially as and for the purposes specified.

2. The said art, consisting in the use of said fluids, as specified,combined with the methods of making molds and casts of and from the workdone with said fluids, substantially as and for the purposes specified.

JOHN F. LOASE.

Witnesses:

. WILLIAM D. FULLER, JOHN H. STANDISH.

